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This case study is about a made to order product supply for project of a trading company located in Thailand. The core products are regularly imported from around the globe. The lead time delivery along the supply chain process from upstream to downstream are critical and have to be accurately and precisely planned. The company incurred significant amount of expenses, reaching over a million baht, due to delayed delivery product. The framework of this research is applied DMAIC methodology of Six Sigma concept to identify root causes and find the appropriate solutions to solve the problem. The result indicated that DMAIC methodology supports the solution to the delayed delivery problem and ensure the sustainability in the long term. ABC Company can reduce the Submit and Technical Approval process from 23 working days to 13 working days of delivery lead times based on the area that was focused on.
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